William allchin



W. ALLCHlN.

Heating Drum. No. 85,554. y gig-1 Patented 1311.5, 1869.

' i UNITED STATES PATENT CEEICEo WILLIAM' ALLCHIN, OF NEWBURG, NEW YORK.

HOT-AIR DRUM.

Specicat-ion forming part of Letters Patent No. 85,554, dated January 5,1869.

To all whom it may concern Be it known that I, Wnmmu ALLcHIN, ofNewburg, in the county of Orange and State ot' New York, have invented anew and Improved Hot-Air Drum; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to make and use the same, referencebeing had to the accompanying drawingsforming part el thisspecification, in which- Figure 1 represents a vertical longitudinalsection of my improved hot-air drum. Fig. 2 is a horizontal section ofthe same, taken on the plane ofthe line a: x, Fig. l. A

Similar letters ot1 reference indicate like parts.

This invention relates to a new apparatus for heating air by theproducts of combustion that escape from a stove, furnace, oven, or rangeof suitable construction.

The invention consists in the use of a fiat rectangular drum, which isby interior partitions divided into three zigzag channels, of which thecentral one serves to conduct the products of combustion to the chimneyor Hue, while the outer ones are passages for air,

-which, entering the drum at the lower end in a cold state, becomeheated by the hot plates and partitions, the latter having been heatedby the smoke passing up between them.

A, in the drawing, represents a flat rectangular. drum, composed of twolarge side plates aa, of two narrow end plates b b, and of a perforatedtop plate, c. The bottom is opened and may have a flange, d, around itto support the drum, and to conduct the air into the same.

The drum is put up above a stove or furnace of suitable description, andis connected with the smokepipe B of the same.

Within the drum are arranged alternate vertical and horizontalpartitions e e, which divide the inside into three, more or less, zigzagpassages C, D, and E.

The central passa-ge D is connected with the smoke-pipe B, and theproducts of combustion pass up through it.

.The side passagesG E receive cold air at their lower ends, and heatthe' same as it passes up through them. The horizontal portions ot' theside passages are divided by horizontal plates f f, in order to producethe zigzag pipes, asshowu. The partitions e and fare fastened betweenribs', g, formed on the side plates a a, as shown, or otherwise.

Scrapers may be arranged in the horizontal portions of the smoke-liuc Dtorallow the saine being cleaned.

The hot air escaping from the passages E can, in suitable pipes ortubes, be conducted to any suitable apartment, to be heated, or can besuffered to escape into the same room in which the drum'is put up.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The hot-air drum A, which is by the partitions e andfdivided into three, more or less, zigzag passages, C, D, and E, forsmoke and air, substantially as and for the purpose herein shown anddescribed.

lwM. ALLGHTN.

Witnesses: y

WM. W. WAT'rs, JAMES E. HORTON.

